Motor tractor



. 1,451,448 1923 EMRQPELLING ET AL MOTOR TRACTOR 4 Filed Sept. 2 1921 2sheets-sheet 1 E. R. PELLING ET AL Apr. 10,1925 1,451,448

MOTOR TRACTOR Filed Sept. 2 1921 2 sheets-sheet 2 III 67770196 PatentedApr. 10, 1923.

UNITED STATES 1,451,448 PATENT OFFICE-.1

ERNEST RICHARD PELLING, F CROYDON, AND vrcroR ALEXANDER MA'r'rroK, 0E

' BECKENHAM, ENGLAND.

MOTOR TRACTOR.

Serial No. 498,023.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L,1313.)

useful Improvement in Motor Tractors (for which we have obtained apatent in Great Britain, October 31, 1919, Patent No.

152,871), of which the following is a full and 16 completespecification.

This invention relates to motor tractors and 'has'for its object aconstruction which can be readily adapted either for the haulage ofplows of the one-way type or for general haulage purposes. In motortractors for one-way plows the merit of which arises from the avoidanceof any turning movement at the headlands four essential features arenecessary viz 26 (1) That the attachment of the plow must be at or aboutthe axis of the driving wheels; (2) that two driving wheels must beemployed spaced at such a distance apart as will provide room for theplow between 80 them; (3) that two steering wheels must be employed oneat each end of the frame (these in existing tractors of this type arefor convenience located on one side of the machine) and (4) means mustbe provided 35, for steering the tractor in either direction. Tractorsembodying these features are well known but owing to the overall lengthof such machines they are not adapted for general haulage purposes asowing to their length they cannot be turned round in an ordinary roadand would be difficult to manoeuvre in confined spaces. The object ofthe present invention is to enable tractors of this type to be easilyand readily altered to make them suitable for general haulage purposes.We attain this end by the construetion and arrangement ,of partshereinafter described and claimed and shown in the accompanying drawingsin which- Figs. 1 and 2 are views in side elevation and planrespectively showing the tractor arranged for hauling one-way plows, and

Figs. 3 and 4 are similar views showing the tractor arranged for use forgeneral haulage purposes.

Throughout the views similar parts are marked with like letters ofreference.

The tractor comprises essentially a cen tral or main frame a on which ismounted a transverse axle o carrying two driving wheels w, w, the powerunit, the variable speed and reverse gearing and the transmission gearall of which may be of any suitable type and as they form no part per seof the present invention call for no further description, and twosecondary frames forming self-contained units of rigid con structioneach being adapted to carry a steering wheel e which is mounted in afork c pivotally mounted in a socket 61 carried by said frame. Thesecondary frames each comprise a beam 6 and a stay I) fixed in suchangular relation to said beam that the width of the frame becomes suchthat it can be attached to the main frame so as to bring the steeringwheel carried by it either at one side of the main frame or centrally inrelation to said frame.

The secondary frames are adapted to be fixed to the main frame a bymeans of angle brackets 7'' which are riveted or otherwise fixed to thebeam and stay respectively and which are adapted to be secured to thetransverse end members of the main frame by bolts g so that saidsecondary frames are capable of being readily mounted on or dismantledfrom the main frame.

To adapt the tractor for general haulage purposes the secondary framesat each end of the main frame are detached and one of them is laidaside. The other is then re-attachedby the bolts 9 to the main frame insuch a position as will bring the steering wheel into a central positionin relation to the main frame as shown in Figs. 3 and 4-.

To facilitate the shifting of one of the secondary frames from oneposition at the end of the main frame to another position at the sameend of the main frame said secondary frame may be mounted in andsupported by a suitable guide.

Any suitable steering mechanism is employed which will enable one orboth of the steering wheels tobe actuated.

hat We claim is carrying a steering Wheel, each of said sec- 1 In amotor tractor, as main frame snpondary frames comprising a beam and aported by two driving Wheels and adapted stay and the Width of one ofsaid secondary to carry the power unit and the transmis frames beingsuch that it can be attached to 5 sion gear between said power unit andsaid the main frame to locate the stcering wheel drivinn; Wheels; andtwo'secondary'self-,concerriedby it either at one side of the main 15tained rigid frames adapted to be dctachframe or centrally in relationto said frame.

ably mounted on the ends of the main ERNEST RICHARD G- frame on the sameside thereof and each VI T R ALEXANDER MATTICK.

